John A. Crockett, M.D.
NPI 1134221021ActiveIndividual· Family Medicine· Walnut Creek, CA
Family Medicine (M.D.) in Walnut Creek, California, trained at Saint Louis University School of Medicine (class of 1971). Their prescriptions cost Medicare Part D more than their services did: $129,739 for 2,099 claims, against $40,207 paid for services in 2024. Mayne Pharma Commercial LLC was the largest of 5 companies reporting payments in 2025, $290.16 in all, mostly food and beverage.
Overview
| NPI | 1134221021 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 2, 2006 |
| Last updated in NPPES | Dec 22, 2022 |
| Certified by provider | Dec 22, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G230620 | CA |
| Obstetrics & Gynecology | 207V00000X | G230620 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 218 |
|---|---|
| Services billed | 1,418 across 45 procedure codes |
| Paid by Medicare | $40,207 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,099 · 4,287 30-day fills |
|---|---|
| Patients | 300 |
| Total drug cost | $129,739 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1971 |
| Medicare specialty | Family Practice |
| Secondary specialties | Obstetrics/Gynecology |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Other facilities
- John Muir Home Health ServicesHome health agency · Concord, CA
Industry payments (Open Payments)
- 2025$290.16 · 9 payments from 5 companies
- 2024$89.01 · 5 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mayne Pharma Commercial LLC | $187.46 | 5 |
| Exact Sciences Corporation | $29.68 | 1 |
| Abbvie Inc. | $26.87 | 1 |
| Regeneron Healthcare Solutions, Inc. | $26.58 | 1 |
| Organon LLC | $19.57 | 1 |
What the 2025 payments were for
- Food and Beverage$290.16 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 130 family medicine physicians in Walnut Creek · All family medicine physicians in California